C31231211113311331323133313331333133313331333133313133313222321   >>    C3123121111331133132313331333133313331333133313331313331322232   <<    C31231211113311331323133313331333133313331333133313133313222323   >>      C31231211113311331323133313331333133313331333133313133313222322   >>