Explicație pas cu pas:
707707-700000
876543-900000
345678-300000
888888-900000
484908-500000
908499-900000
200047-200000
233677-200000
737737-700000
808404-800000
550055-500000(prin lipsa)
400357-400000
450054-500000(prin adaos)
810108-800000
464646-500000(prin adaos)