C1111233131211111211113313331333133313232321331133132313331333221   >>    C111123313121111121111331333133313331323232133113313231333133322   <<    C1111233131211111211113313331333133313232321331133132313331333223   >>      C1111233131211111211113313331333133313232321331133132313331333222   >>