collmap:
    ;;
    ;;                .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   + - +   .   .   .   .   .   .   .   .   .   .
    ;;                                                                           /     \
    ;;                  .   .   .   .   + - + - + - + = @ = @ = @ = @ = @ = @ = +   .   +   .   .   .   .   .   .   .   .   .
    ;;                                 /             \                         /   /   /
    ;;                .   .   .   .   +   . - + - .   + = @ = @ = @ = + - + - +   +   +   .   .   .   .   .   .   .   .   .   .
    ;;                               /   /       /   / =             /           /   /
    ;;                  .   .   .   +   +   .   +   +   @   .   .   +   . - + - +   +   .   .   .   + - +   .   + - +   .   .
    ;;                             /   /       /   /     =         = \           \   \             /     \     /     \
    ;;                .   .   .   +   . - + - .   +   .   @   .   @   + - + - +   +   +   .   .   +   .   +   +   .   +   .   .
    ;;                             \             /         =     =             \   \   \         = \     /     \     /
    ;;                  .   .   .   + - + - + - +   .   .   @   @   .   .   .   +   .   + = @ = @ = + - +   .   + - +   .   .
    ;;                             = =         =             = =                 \     / =     =
    ;;                .   .   .   @   @   .   @   .   .   + -(+)- + - + - +   .   + - +   @   @   .   .   .   .   .   + - + = @ = @ = @
    ;;                           =     =     =           /                 \               = =                       /     \
    ;;              .   .   .   @   .   @   @   .   .   +   . - + - + - .   +   .   .   .   @   .   .   .   .   .   +   .   +
    ;;                         =         = =             \                 / =             = =                       \     /
    ;;            .   .   .   @   .   .   @   .   .   .   + - + - + - + - +   @   .   .   @   @   .   .   .   .   .   + - + = @ = @
    ;;                       =           = =               =                   =         =     =
    ;;          .   .   .   @   .   .   @   @   .   .   .   @   .   .   .   .   @   .   @   .   + - + - +   .   + - +   .   .
    ;;                     =           =     =               =                   =     =         \       \     /     \
    ;;        .   .   .   + - + - + - + = @ = @ = @ = @ = @ = @ = @ = @ = @ = @ = + - +   .   .   +   .   +   +   .   +   .   .
    ;;                   /             \       =               =                 /     \           \     /     \     /
    ;;          .   .   +   . - + - .   +   .   @   .   .   .   @   .   .   .   +   .   +   .   .   + - +   .   + - +   .   .
    ;;                   \             /         =               =             /   / \   \
    ;;        .   .   .   + - + - + - +   .   .   @   + - +   .   @   .   .   +   +   +   +   .   .   .   .   .   .   .   .   .
    ;;                     =                       = /     \       =         = \   \ /   /
    ;;          .   .   .   @   + - +   .   .   .   +   .   +   .   @   .   @   +   .   +   .   .   .   .   .   .   .   .   .
    ;;                       = /     \               \   \   \       =     =     \     /
    ;;            .   .   .   +   .   +   .   .   .   +   +   +   .   @   + - +   + - +   .   .   .   .   .   .   .   .   .   .
    ;;                         \     /                 \   \   \       = /     \ =
    ;;              .   .   .   + - + = @ = @ = @ = @ = +   .   +   .   +   .   +   .   .   .   .   .   .   .   .   .   .   .
    ;;                                                   \     /         \     /
    ;;                .   .   .   .   .   .   .   .   .   + - + = @ = @ = + - +   .   .   .   .   .   .   .   .   .   .   .   .
    ;;
    ;;                  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .