C1111133313331323223313331333133313231333132332131333132323323333321   >>    C111113331333132322331333133313331323133313233213133313232332333332   <<    C1111133313331323223313331333133313231333132332131333132323323333323   >>      C1111133313331323223313331333133313231333132332131333132323323333322   >>