$\snippet{name: op_column, sign: '-', x: '7 ', y: '2', z: '38 '}$
$\snippet{name: op_column, sign: '+', x: '5', y: '4 ', z: '81 '}$
$\snippet{name: op_column, sign: '-', x: '2', y: '17', z: '4 '}$
$\snippet{name: op_column, sign: '-', x: '4 ', y: '3', z: '29 '}$
$\snippet{name: op_column, sign: '+', x: '2 ', y: '4', z: '51 '}$
$\snippet{name: op_column, sign: '-', x: '70', y: '32', z: '38 '}$
$\snippet{name: op_column, sign: '+', x: '35', y: '46', z: '81 '}$
$\snippet{name: op_column, sign: '-', x: '62', y: '17', z: '45 '}$
$\snippet{name: op_column, sign: '-', x: '42', y: '13', z: '29 '}$
$\snippet{name: op_column, sign: '+', x: '27', y: '24', z: '51 '}$