International Morse Code defines a standard encoding where each letter is mapped to a series of dots and dashes, as follows:
- ‘a’ maps to “.-“,
- ‘b’ maps to “-…”,
- ‘c’ maps to “-.-.”, and so on.
For convenience, the full table for the 26 letters of the English alphabet is given below:
Given an array of strings words where each word can be written as a concatenation of the Morse code of each letter.
- For example, “cab” can be written as “-.-..—…”, which is the concatenation of “-.-.”, “.-“, and “-…”. We will call such a concatenation the transformation of a word.
Return the number of different transformations among all words we have.