There are 2 10 numbers that are not repeated, as shown below:

0 12345 0 12346 0 12347 0 12348 0 12349 0 12356 0 12357 0 12358 0 12359 0 1 2367 0 12368 0 1 2369 0 12378 0 12379 0 12389 0 12456 0 12457 0 12458 0 12459 0 / kloc-0/2467 0 12468 0 12469 0 12478 065 438+02479 0 12489 0 12567 0 12568 0 12569 0 12578 0 / kloc-0/2579 0 12589 0 12678 0 12679 0 12689 0 1278 9 0 13456 0 13457 0 13458 0 1 3459 0 13467 0 13468 0 13469 0 13478 0 13479 0 13489 0 13567 065438 +03568 0 13569 0 1 3578 0 13579 0 13589 0 13678 0 13679 0 13689 0 13789 0 14567 0 14568 0 14569 0 / kloc-0/4578 0 14579 0 14589 0 14678 0 14679 0 14689 0 14789 0 15678 0 15679 0 15689 0 / kloc-0/5789 0 1 6 789 023456 023457 023458 023459 023467 023468 023469 023478 023479 023489 023567 023568 023569 023578 023579 023589 023678 023679 023689 023789 02456 7 024568 024569 024578 024579 024589 024678 024679 024689 024789 025678 025679 025689 025789 026789 034567 034568 034569 034578 034579 034589 034678 03 46 79 034689 034789 035678 035679 035689 035789 036789 045678 045679 045689 045789 046789 056789 123456 123457 123458 / kloc-0/23459 65438 +023467 123468 123469 123478 123479 123489 123567 123568 123569 / kloc-0/23578 123579 123589 123678 123679 123689 123789 124567 124568 124569 / kloc-0/24578 124579 124589 124678 12 4679 124689 124789 125678 125679 1 25689 125789 126789 134567 134568 134569 134578 654 38+034579 134589 134678 1 34679 134689 134789 135678 135679 135689 135789 136789 14567 8 145679 / kloc-0/45689 145789 146789 1 56789 234567 234568 234569 234578 234579 234589 234678 234679 234689 234789 235678 235679 235689 235789 236789 245678 245679 245689 245789 246789 25678 9 345678 345679 345689 345789 346789 356789 456789