Hmm, interesting page Magistra. I disagree with some of their past participles. I prefer saying "I have beaten" to "I have beat" or "I have shaven" to "I have shaved" even if that is less conventional.<br /><br />"Fero, ferre, tuli, latum;" tolero, tolerare, toleravi, toleratum, and tollo, tollere, sustuli, sublatum are a result of some rather large verb collision. The verb do, dare, dedi, datum is also the result of a collision, which explains it's unusual third part which is related to dedico and it's abnormal short "A" in the present stem.
flebile nescio quid queritur lyra, flebile lingua murmurat exanimis, respondent flebile ripae