C1111133313331323223313331333133313331333131211113313331311221122221   >>    C111113331333132322331333133313331333133313121111331333131122112222   <<    C1111133313331323223313331333133313331333131211113313331311221122223   >>      C1111133313331323223313331333133313331333131211113313331311221122222   >>