Запиши соседей данных чисел. .... 4997.... ....8999.... ....4000.... ....9001....
4996 4997 49988998 8998 90003999 4000 40019000 9001 9002
4996 4997 4998 8998 8998 9000 3999 4000 4001 9000 9001 9002
4996 4997 4998 8998 8999 9000 3999 4000 4001 9000 9001 9002