C31231211111133131211113313331333133313331323133313231323221111   >>    C3123121111113313121111331333133313331333132313331323132322111   <<    C31231211111133131211113313331333133313331323133313231323221113   >>      C31231211111133131211113313331333133313331323133313231323221112   >>