C1111233131211111211113313331323133313232212111113331323133311212311   >>    C111123313121111121111331333132313331323221211111333132313331121231   <<    C1111233131211111211113313331323133313232212111113331323133311212313   >>      C1111233131211111211113313331323133313232212111113331323133311212312   >>