C1111133313331323223313331333133313113313231333131211111311133323111   >>    C111113331333132322331333133313331311331323133313121111131113332311   <<    C1111133313331323223313331333133313113313231333131211111311133323113   >>      C1111133313331323223313331333133313113313231333131211111311133323112   >>