Yawn doesn't have a TM number because it isn't a TM.
Mach Punch is not a TM so therefore it does not have a TM number.
Aura Sphere is not a TM so therefore it does not have a TM number.
You get it in the veilstone department store. You get it in the veilstone department store.
it is TM number 43
the TM dig is number 28
Explosion is TM 64
Dig is TM 28.
It is not an TM.
The TM number is TM15.
TM 13.
There is no TM 100. As of Generation IV, the highest TM number is 92.