C1111121111331311211331333133313331333133313231333133313331333133112312122321   >>    C111112111133131121133133313331333133313331323133313331333133313311231212232   <<    C1111121111331311211331333133313331333133313231333133313331333133112312122323   >>      C1111121111331311211331333133313331333133313231333133313331333133112312122322   >>