C11111211113313112113313331333133313331333132212111111113313223231   >>    C1111121111331311211331333133313331333133313221211111111331322323   <<    C11111211113313112113313331333133313331333132212111111113313223233   >>      C11111211113313112113313331333133313331333132212111111113313223232   >>