C1111233131211111211113313331333133313232321333133313231331121333131   >>    C111123313121111121111331333133313331323232133313331323133112133313   <<    C1111233131211111211113313331333133313232321333133313231331121333133   >>      C1111233131211111211113313331333133313232321333133313231331121333132   >>