Morse

All your friends are crazy about the movie "Interstellar". They are now posting on facebook in Morse code. You need to write a code to decode Morse!!

These Morse codes only contain lowercase english letters(a-z) and whitespaces.

Note - Morse code is a way to encode characters as a sequence of dits and dashes. Each character has a fixed encoding. An example of a famous morse code is that of SOS "...---..." . S is encoded as "..." (dit dit dit) and O is encoded as "---" (dash dash dash).
In this problem, a dit is denoted by "=" and a dash is denoted by "===". Symbols are seperated by "." , letters are seperated by "..." and words are seperated by "......." .
So, SOS is encoded as =.=.=...===.===.===...=.=.=
Encodings for all the characters can be found at the link given below.

http://morsecode.scphillips.com/morse2.html