C111123313331323113313331323133313331333132331211113313331323133313331312333231   >>    C11112331333132311331333132313331333133313233121111331333132313331333131233323   <<    C111123313331323113313331323133313331333132331211113313331323133313331312333233   >>      C111123313331323113313331323133313331333132331211113313331323133313331312333232   >>