C11111333133313232233133313331333131133132313311212111111331323133313221221   >>    C1111133313331323223313331333133313113313231331121211111133132313331322122   <<    C11111333133313232233133313331333131133132313311212111111331323133313221223   >>      C11111333133313232233133313331333131133132313311212111111331323133313221222   >>