2. After the analogy of Participles like sēnsus and caesus, where -sus arises by phonetic change, -sus for -tus is added to other Verb Stems; as,—
| lāb-ī, | Participle | lāp-sus. |
| fīg-ere, | " | fī-xus. |
a. The same consonant changes occur in appending this ending -sus to the stem as in the case of the Perfect ending -si (see [§ 118], 3, a).
3. A few Verbs form the Participle in -ĭtus; as,—
| domā-re, | dom-ĭtus. |
| monē-re, | mon-ĭtus. |
4. The Future Active Participle is usually identical in its stem with the Perfect Passive Participle; as, amā-tus, amātūrus; moni-tus, monitūrus. But—
| juvā-re, | Perf. Partic. | jūtus, | has Fut. Act. Partic. | juvātūrus.[[40]] |
| lavā-re, | " | lautus, | " | lavātūrus. |
| par-ere, | " | partus, | " | paritūrus. |
| ru-ere, | " | rutus, | " | ruitūrus. |
| secă-re, | " | sectus, | " | secātūrus. |
| fru-ĭ, | " | frūctus, | " | fruitūrus. |
| mor-ī, | " | mortuus, | " | moritūrus. |
| orī-rī, | " | ortus, | " | oritūrus. |
LIST OF THE MOST IMPORTANT VERBS, WITH PRINCIPAL PARTS.