C31231211111133131211113313331333133313331323223313231333131231   >>    C3123121111113313121111331333133313331333132322331323133313123   <<    C31231211111133131211113313331333133313331323223313231333131233   >>      C31231211111133131211113313331333133313331323223313231333131232   >>