$\snippet{name: op_column, sign: '-', x: '54', y: '19', z: '35'}$
Проверка:
1) $\snippet{name: op_column, sign: '-', x: '54', y: '35', z: '19'}$;
2) $\snippet{name: op_column, sign: '+', x: '35', y: '19', z: '54'}$.
 
$\snippet{name: op_column, sign: '+', x: '16', y: '49', z: '65'}$
Проверка:
1) $\snippet{name: op_column, sign: '-', x: '65', y: '16', z: '49'}$;
2) $\snippet{name: op_column, sign: '-', x: '65', y: '49', z: '16'}$.
 
$\snippet{name: op_column, sign: '+', x: '27', y: '38', z: '65'}$
Проверка:
1) $\snippet{name: op_column, sign: '-', x: '65', y: '27', z: '38'}$;
2) $\snippet{name: op_column, sign: '-', x: '65', y: '38', z: '27'}$.
 
$\snippet{name: op_column, sign: '-', x: '43', y: '17', z: '26'}$
Проверка:
1) $\snippet{name: op_column, sign: '-', x: '43', y: '26', z: '17'}$;
2) $\snippet{name: op_column, sign: '+', x: '26', y: '17', z: '43'}$.