Question: write a function consecutive(refstring) that takes a string refstring as a parameter and returns the number of disjoint substrings with consecutive characters. A substring

write a function consecutive(refstring) that takes a string refstring as a parameter and returns the number of disjoint substrings with consecutive characters. A substring with 2 or more consecutive characters will be counted once. For example: consecutive('settle') will return 1 consecutive('printing') will return 0 consecutive( 'Yessss. Really ? Reaaaaaalllly?) will return return 4

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