C11111211113313112113313331333133313331333132313331333133313331332133313222221   >>    C1111121111331311211331333133313331333133313231333133313331333133213331322222   <<    C11111211113313112113313331333133313331333132313331333133313331332133313222223   >>      C11111211113313112113313331333133313331333132313331333133313331332133313222222   >>