$\snippet{name: op_column, sign: '+', x: '35', y: '24', z: ''}$
$\snippet{name: op_column, sign: '-', x: '59', y: '24', z: ''}$
$\snippet{name: op_column, sign: '-', x: '59', y: '35', z: ''}$

$\snippet{name: op_column, sign: '+', x: '35', y: '24', z: '59'}$
$\snippet{name: op_column, sign: '-', x: '59', y: '24', z: '35'}$
$\snippet{name: op_column, sign: '-', x: '59', y: '35', z: '24'}$