C1111233131211111211113313331333133313232321331133132313331333112332321   >>    C111123313121111121111331333133313331323232133113313231333133311233232   <<    C1111233131211111211113313331333133313232321331133132313331333112332323   >>      C1111233131211111211113313331333133313232321331133132313331333112332322   >>