0fa8e976_SlideIT_Keyboard___AndroidTapp__Swype
[Feature] Double letters [SlideIt] Predicts and presents single and double letters for you to choose from: i.e. “ten” and “teen” [Swype] 
For double letters like “teen” swivel a little circle on the “e”. This will help avoid typing “ten”. The great thing is that the circle you create does not have to be perfect.
SlideIT Keyboard - AndroidTapp
Swype