C11111211113313112113313331333133313331333132322121111331311313231   >>    C1111121111331311211331333133313331333133313232212111133131131323   <<    C11111211113313112113313331333133313331333132322121111331311313233   >>      C11111211113313112113313331333133313331333132322121111331311313232   >>