C1111233131211111211113313231333133313331323331333131221323311321   >>    C111123313121111121111331323133313331333132333133313122132331132   <<    C1111233131211111211113313231333133313331323331333131221323311323   >>      C1111233131211111211113313231333133313331323331333131221323311322   >>