| "nsucc" :: tl -> k T.OK ("nsucc" :: outs) tl
| "ntri" :: tl -> k T.OK ("ntri" :: outs) tl
| "niter" :: tl -> k T.OK ("niter" :: outs) tl
+ | "plt" :: tl -> k T.OK ("plt" :: outs) tl
+ | "ple" :: tl -> k T.OK ("ple" :: outs) tl
| _ -> k T.OO outs ins
let main =