C1111233131211111211113313331333133313331333133313331311331323133313112332321   >>    C111123313121111121111331333133313331333133313331333131133132313331311233232   <<    C1111233131211111211113313331333133313331333133313331311331323133313112332323   >>      C1111233131211111211113313331333133313331333133313331311331323133313112332322   >>