C11111211113313112113313331333133313331333133213331333133313331333122221   >>    C1111121111331311211331333133313331333133313321333133313331333133312222   <<    C11111211113313112113313331333133313331333133213331333133313331333122223   >>      C11111211113313112113313331333133313331333133213331333133313331333122222   >>