C31231211111133131211113313331333133313133112331333132322112121   >>    C3123121111113313121111331333133313331313311233133313232211212   <<    C31231211111133131211113313331333133313133112331333132322112123   >>      C31231211111133131211113313331333133313133112331333132322112122   >>