$\snippet{name: op_column, sign: '+', x: 34, y: 21, z: 55}$
Проверка:
$\snippet{name: op_column, sign: '-', x: 55, y: 21, z: 34}$
 
$\snippet{name: op_column, sign: '+', x: 22, y: 68, z: 90}$
Проверка:
$\snippet{name: op_column, sign: '-', x: 90, y: 68, z: 22}$
 
$\snippet{name: op_column, sign: '+', x: 58, y: 17, z: 75}$
Проверка:
$\snippet{name: op_column, sign: '-', x: 75, y: 17, z: 58}$
 
$\snippet{name: op_column, sign: '+', x: 39, y: 28, z: 67}$
Проверка:
$\snippet{name: op_column, sign: '-', x: 67, y: 28, z: 39}$
 
$\snippet{name: op_column, sign: '+', x: 46, y: 47, z: 93}$
Проверка:
$\snippet{name: op_column, sign: '-', x: 93, y: 47, z: 46}$