C1111233131211111211113313331333133313311211111333132313232211111   >>    C111123313121111121111331333133313331331121111133313231323221111   <<    C1111233131211111211113313331333133313311211111333132313232211113   >>      C1111233131211111211113313331333133313311211111333132313232211112   >>