C11111211113313112113313331333133313331333132212111133112312231   >>    C1111121111331311211331333133313331333133313221211113311231223   <<    C11111211113313112113313331333133313331333132212111133112312233   >>      C11111211113313112113313331333133313331333132212111133112312232   >>