C1111233131211111211113313331323133313231333133313232113213232231   >>    C111123313121111121111331333132313331323133313331323211321323223   <<    C1111233131211111211113313331323133313231333133313232113213232233   >>      C1111233131211111211113313331323133313231333133313232113213232232   >>