Does anyone have any memorization techniques to help with this situation? What I do is memorize the actual/root word and then when needing to conjugate I just work in the appropriate ending (present tense ending in er - e,es,e,ons,ez,ent). So given that, I read this sentence and thought - dev, is probably devoir with the ent ending so that means its must for a lot of people - which would make the sentence, Their position must be difficult, which is obviously wrong. So any tips memorizing the special cases?
Also, why the ent ending when its Her not Their?
Someone more proficient can correct me if I'm wrong, but 'devient' is not a conjugation of 'devoir' but 'devenir' (to become). As far as memorizing its conjugation, it has the root word 'venir' in it, which is irregular. So, just add 'de-' in front of the conjugated 'venir'. The irregular verbs just have to be memorized separately over time. Thankfully, there are groups of irregular verbs that are conjugated in the same way. But, you need to learn which conjugate the same. For instance, verbs ending '-uire' are all conjugated the same way( I think), but '-oir' irregular verbs have several possible forms of conjugations. Pouvoir, savoir, asseoir, valoir and avoir are all different.
You are right. "Devenir" is a variant of the root verb "venir".
Other variants: Revenir (come back), parvenir (achieve) , survenir (happen), prévenir (warn), circonvenir (circumvent), advenir (happen), provenir (come from), se souvenir (remember), subvenir (support)
Root conjugation: je viens, tu viens, il/elle/on vient, nous venons, vous venez (polite singular or plural), ils/elles viennent.
So if you learn "venir" by heart, you get the others 9 by the same token!