C1111133313331323223313331333133313231333132332131333133313211232212331   >>    C111113331333132322331333133313331323133313233213133313331321123221233   <<    C1111133313331323223313331333133313231333132332131333133313211232212333   >>      C1111133313331323223313331333133313231333132332131333133313211232212332   >>