Remove adjacent duplicates
Try to find a way to remove adjacent duplicate letters.
Start file
a a d d j a c c c c e n t t t t d u p p p l i i i c a a t t e e w o r d d d d s s
End file
a d j a c e n t d u p l i c a t e w o r d s
View Diff
1c1 < a a d d j a c c c c e n t t t t d u p p p l i i i c a a t t e e w o r d d d d s s --- > a d j a c e n t d u p l i c a t e w o r d s
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