C11111333133313232233133313331333131121133131133133313332313221   >>    C1111133313331323223313331333133313112113313113313331333231322   <<    C11111333133313232233133313331333131121133131133133313332313223   >>      C11111333133313232233133313331333131121133131133133313332313222   >>