C31231211113313121211113313331323133313331333133112133313221321   >>    C3123121111331312121111331333132313331333133313311213331322132   <<    C31231211113313121211113313331323133313331333133112133313221323   >>      C31231211113313121211113313331323133313331333133112133313221322   >>