C11111211113313112113313331333133313331312322121111133313331331121212131   >>    C1111121111331311211331333133313331333131232212111113331333133112121213   <<    C11111211113313112113313331333133313331312322121111133313331331121212133   >>      C11111211113313112113313331333133313331312322121111133313331331121212132   >>