Brah, apparently a good way to do this is link the word to a something and to write it out numerous times so you subconsiously know it. This is what something guy told us in a 2 hour seminar it was pretty boring and not that useful. For learning japanese formula's i just used songs susprisingly easy (for me) plus once you know the formula and how works you don't really need to.
e.g. for, Group 1, ~て form verb conguation (just an example of what i mean)
い, ち, り ~って
び, に, み, ~んで
き, ~いて
ぎ, ~いで
(To the Tune of My Darling Clemetine)
For some reason i feel like explaining it even though the people who know what i mean already know what the hell its about. If the Verb when in pre-masu form ends with い or ち or り replace the end い or ち or り with ~って and so on for び, に, み and replace with ~んで etc. Although this formula doesn't work for several Japanese verbs, e.g. きます
is きて.
Edit- Damn misread what you were saying sorry. I don't think there is a shortcut. It just requires alot of effort of writing and getting someone to test you over and over.