$\snippet{name: op_column, sign: '+', x: '39', y: '15', z: ' '}$
$\snippet{name: op_column, sign: '-', x: '93', y: '46', z: ' '}$
$\snippet{name: op_column, sign: '-', x: '80', y: '56', z: ' '}$
$\snippet{name: op_column, sign: '+', x: '32', y: '28', z: ' '}$
$\snippet{name: op_column, sign: '-', x: '71', y: '43', z: ' '}$
$\snippet{name: op_column, sign: '+', x: '39', y: '15', z: '54 '}$
$\snippet{name: op_column, sign: '-', x: '93', y: '46', z: '47 '}$
$\snippet{name: op_column, sign: '-', x: '80', y: '56', z: '24 '}$
$\snippet{name: op_column, sign: '+', x: '32', y: '28', z: '60 '}$
$\snippet{name: op_column, sign: '-', x: '71', y: '43', z: '28 '}$