C11111333133313232233133313331333131133132233131133131121132311231   >>    C1111133313331323223313331333133313113313223313113313112113231123   <<    C11111333133313232233133313331333131133132233131133131121132311233   >>      C11111333133313232233133313331333131133132233131133131121132311232   >>