| pie-nasal-infix-present | |
| pie-ei-present | -ei |
| pie-thematic-present | -e |
| pie-sk-present | -ske- |
| pie-causative | -eie- |
| pie-augment | h₁e- |
| pie-lengthened-grade-root | |
| pie-s-aorist | -s |
| pie-root-aor | |
| pie-thematic-ie-present | -ie- |
| pie-thematized-ie-present | -ie- |
| pie-root-present | |
| pie-s-present | -es |
| pie-augment-impf | h₁e- |
| pie-verbal-i-reduplication | i- |
| pie-thematic-aor | -e |
| pie-reduplicated-aor | e--e- |