$\snippet{name: op_column, sign: '+', x: '62', y: '28', z: '90'}$
Проверка:
1) $\snippet{name: op_column, sign: '-', x: '90', y: '62', z: '28'}$;
2) $\snippet{name: op_column, sign: '-', x: '90', y: '28', z: '62'}$.
 
$\snippet{name: op_column, sign: '-', x: '90', y: '17', z: '73'}$
Проверка:
1) $\snippet{name: op_column, sign: '+', x: '17', y: '73', z: '90'}$;
2) $\snippet{name: op_column, sign: '-', x: '90', y: '73', z: '17'}$.
 
$\snippet{name: op_column, sign: '+', x: '18', y: '22', z: '40'}$
Проверка:
1) $\snippet{name: op_column, sign: '-', x: '40', y: '22', z: '18'}$;
2) $\snippet{name: op_column, sign: '-', x: '40', y: '18', z: '22'}$.
 
$\snippet{name: op_column, sign: '-', x: '86', y: '35', z: '51'}$
Проверка:
1) $\snippet{name: op_column, sign: '+', x: '35', y: '51', z: '86'}$;
2) $\snippet{name: op_column, sign: '-', x: '86', y: '51', z: '35'}$.