C11111333133313232233133313331333131133131231231231323132313221   >>    C1111133313331323223313331333133313113313123123123132313231322   <<    C11111333133313232233133313331333131133131231231231323132313223   >>      C11111333133313232233133313331333131133131231231231323132313222   >>