$coord_{"AB"}{1} = [420,520,870];
$coord_{"AB"}{2} = [220,520,470];
$coord_{"AB"}{6} = [320,320,270];
$coord_{"AB"}{7} = [520,720,370];
$coord_{"AB"}{8} = [620,520,670];
$coord_{"PL"}{12} = [420,520,570];
$coord_{"PL"}{13} = [220,520,170];
$coord_{"B"}{2} = [320,720,670];
$coord_{"B"}{4} = [520,520,170];
$coord_{"B"}{5} = [620,820,370];