| trūdō, shove | trūdere | trūsī | trūsus |
| vādō, go | vādere | -vāsī | -vāsus |
[959.] (b.) With the present stem in -sco|e- ([834]).
| algēscō, get cold | algēscere | alsī | —— |
| ardēscō, flame out | ardēscere | arsī (ex-arsī) | —— |
| lūcēscō, grow light | lūcēscere | -lūxī | —— |
Sometimes in the present system lūcīscō, lūcīscere, &c.
| frīgēscō, grow cold | frīgēscere | -frīxī | —— |
| vīvēscō, get alive | vīvēscere | (re-vīxī) | —— |
In composition, also re-vīvīscō, re-vīvīscere.
[960.] (c.) With the present stem in -to|e- ([835]).
| flectō, turn | flectere | flexī | flexus |
| nectō, bind together | nectere | nexī, nexuī | nexus |
Perfect system rare: nexit (Lucil., Acc.); nexuit, ad-nexuerant (Sall.).
| pectō, comb | pectere | pexī once | pexus |