would not recommend it as the main way to form a yes-or-no question, especially in writing.
In addition to the verb repetition method to answer ‘yes’, it is also very common to hear ‘lon’ with the meaning of ‘yes, that’s true’.
p. 34
In early years, kepeken served as both a preposition (without e) and as a transitive verb (with e). Later, an effort was made to consolidate kepeken as only a preposition, i.e. without e. Today, some people use kepeken e, although the majority use kepeken only as a preposition. There may be benefits to either style.
o kepeken ala ilo ike. or o kepeken ilo ike ala.
Transitive verb style:
o kepeken ala e ilo ike. or o kepeken e ilo ike ala.
| mi sona ala e tan. | I don't know the reason. |
| mi toki e lon. | I say the truth. |
p. 35
I personally use the preposition lon with a very wide meaning. The example mi toki lon toki pona could also be expressed as mi toki kepeken toki pona, and many Toki Pona
