C11111211113313112113313331333133313331333132212111133133313222313231   >>    C1111121111331311211331333133313331333133313221211113313331322231323   <<    C11111211113313112113313331333133313331333132212111133133313222313233   >>      C11111211113313112113313331333133313331333132212111133133313222313232   >>