C1111133313331323223313331333133313231333132332131333132213211221   >>    C111113331333132322331333133313331323133313233213133313221321122   <<    C1111133313331323223313331333133313231333132332131333132213211223   >>      C1111133313331323223313331333133313231333132332131333132213211222   >>