C11111211113313112113313331333133313331333132212113313331322221   >>    C1111121111331311211331333133313331333133313221211331333132222   <<    C11111211113313112113313331333133313331333132212113313331322223   >>      C11111211113313112113313331333133313331333132212113313331322222   >>