de ordin 5 inseamna 5 cifre => 11 111 ,11 119 , 11 191 , 11 911, 19 111, 91 111 ,
11 199, 11 991, 19 911, 99 111, 91 119, 91 191, 91 911, 19 119, 19 191, 11 919, 11 999, 99 911, 99 191, 99 119, 19 991,19 199,19 919, 91 919, 91 199, 99 991, 99 919, 99 199, 91 999,19 999, 99 999
