C1111121111331311211331333133313331333133313221211113313231323211321   >>    C111112111133131121133133313331333133313331322121111331323132321132   <<    C1111121111331311211331333133313331333133313221211113313231323211323   >>      C1111121111331311211331333133313331333133313221211113313231323211322   >>