C31231211111133131211113313331333133313331323133313311211113313331322233221   >>    C3123121111113313121111331333133313331333132313331331121111331333132223322   <<    C31231211111133131211113313331333133313331323133313311211113313331322233223   >>      C31231211111133131211113313331333133313331323133313311211113313331322233222   >>