Just write the consonants in the order they appear without "+", vowels or irregular ༹. (i.e. ཙ, ཚ, ཛ are ts, tsh and dz and for example ཀ༹ is k only)
For instance:
| ཀུནས། | → | kns |
| སྒྲུབྱིས། | → | sgrbys |
| ཀླེུནད། | → | klnd |
| དཀྱིུང། | → | dkyng |
| བཀ༹ལ། | → | bkl |
| རྣཾསེ། | → | rnMs or rnms |