C11111211113313112113313331333133313331333131211111211113313232132221   >>    C1111121111331311211331333133313331333133313121111121111331323213222   <<    C11111211113313112113313331333133313331333131211111211113313232132223   >>      C11111211113313112113313331333133313331333131211111211113313232132222   >>