C111123313331323113313331333133313331323133113313231333133313221211111211131   >>    C11112331333132311331333133313331333132313311331323133313331322121111121113   <<    C111123313331323113313331333133313331323133113313231333133313221211111211133   >>      C111123313331323113313331333133313331323133113313231333133313221211111211132   >>