$\snippet{name: op_column, sign: '+', x: 56, y: 39, z: '95'}$
 
$\snippet{name: op_column, sign: '+', x: 83, y: 26, z: '109'}$
 
$\snippet{name: op_column, sign: '+', x: 34, y: 66, z: '100'}$
 
$\snippet{name: op_column, sign: '-', x: 87, y: 38, z: '49'}$
 
$\snippet{name: op_column, sign: '+', x: 63, y: 19, z: '82'}$