C1111121111331311211331333133313331333133313221211113313231323231121   >>    C111112111133131121133133313331333133313331322121111331323132323112   <<    C1111121111331311211331333133313331333133313221211113313231323231123   >>      C1111121111331311211331333133313331333133313221211113313231323231122   >>