Hints on how to use to solve multiple operations within the same space?

Hi Akilan, 

Thanks a lot for publishing this library! It's so insightful!

I was looking for an advice from you on how to tackle the case of having multiple operations that share the same letters hence solving a whole group of operations instead of a single one, e.g.:
```
PLS + LEK = MML
 :     ×     ×
LS  + P   =  LR
-----------------
EL  × PGR = GQPR
```

Thanks in advance! 
