**Shuffled numbers**

Each number is paired with the number it should follow. That's enough information to put them in order.

##### Start file

nine: eight twelve: eleven seventeen: sixteen nineteen: eighteen two: one twenty: nineteen five: four eighteen: seventeen one: - sixteen: fifteen thirteen: twelve three: two eight: seven ten: nine six: five fourteen: thirteen fifteen: fourteen four: three seven: six eleven: ten

##### End file

one: - two: one three: two four: three five: four six: five seven: six eight: seven nine: eight ten: nine eleven: ten twelve: eleven thirteen: twelve fourteen: thirteen fifteen: fourteen sixteen: fifteen seventeen: sixteen eighteen: seventeen nineteen: eighteen twenty: nineteen

#### View Diff

1,8d0 < nine: eight < twelve: eleven < seventeen: sixteen < nineteen: eighteen < two: one < twenty: nineteen < five: four < eighteen: seventeen 10,11c2 < sixteen: fifteen < thirteen: twelve --- > two: one 12a4,7 > four: three > five: four > six: five > seven: six 13a9 > nine: eight 15c11,13 < six: five --- > eleven: ten > twelve: eleven > thirteen: twelve 18,20c16,20 < four: three < seven: six < eleven: ten --- > sixteen: fifteen > seventeen: sixteen > eighteen: seventeen > nineteen: eighteen > twenty: nineteen

### Solutions by @alaa_ibrahim:

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