C1111133313331323223313331333133313113313113313231333133313331333132233122321   >>    C111113331333132322331333133313331311331311331323133313331333133313223312232   <<    C1111133313331323223313331333133313113313113313231333133313331333132233122323   >>      C1111133313331323223313331333133313113313113313231333133313331333132233122322   >>