$\snippet{name: op_column, sign: '-', x: 74, y: 15, z: 59}$
Проверка:
$\snippet{name: op_column, sign: '+', x: 59, y: 15, z: 74}$
 
$\snippet{name: op_column, sign: '+', x: 49, y: 24, z: 73}$
Проверка:
$\snippet{name: op_column, sign: '-', x: 73, y: 24, z: 49}$
 
$\snippet{name: op_column, sign: '-', x: 52, y: 36, z: 16}$
Проверка:
$\snippet{name: op_column, sign: '+', x: 16, y: 36, z: 52}$
 
$\snippet{name: op_column, sign: '-', x: 73, y: 58, z: 15}$
Проверка:
$\snippet{name: op_column, sign: '+', x: 15, y: 58, z: 73}$