C11111211113313112113313331333133313331333132212111133112113111   >>    C1111121111331311211331333133313331333133313221211113311211311   <<    C11111211113313112113313331333133313331333132212111133112113113   >>      C11111211113313112113313331333133313331333132212111133112113112   >>