C1111233131211111211113313331333133313232212111133132333112322111   >>    C111123313121111121111331333133313331323221211113313233311232211   <<    C1111233131211111211113313331333133313232212111133132333112322113   >>      C1111233131211111211113313331333133313232212111133132333112322112   >>