C1111233131211111211113313331333133313221211113313331323133313123131   >>    C111123313121111121111331333133313331322121111331333132313331312313   <<    C1111233131211111211113313331333133313221211113313331323133313123133   >>      C1111233131211111211113313331333133313221211113313331323133313123132   >>