C111123313331323113313331323133313331333132331211113313331323132211   >>    C11112331333132311331333132313331333133313233121111331333132313221   <<    C111123313331323113313331323133313331333132331211113313331323132213   >>      C111123313331323113313331323133313331333132331211113313331323132212   >>