Thanks, Redapple - now I have got it in my questions!
Smiley = Colon followed by Close bracket
Sad = Colon followed by Open bracket
Winking = Semi Colon followed by Close bracket
Laughing = Colon followed by Upper case D
Crying = Colon followed by Apostrophe then Open bracket
Red (with anger) = Colon followed by lower case x
Tongue out = Colon followed by Upper case P
Surprised = Colon followed by Upper case O
Sunglasses (Cool) = Number 8 followed by Hyphen then Close bracket
Unsure = Colon followed by Hyphen then forward slash