S'entre-manger is a french first group verb. So it follow the regular conjugation pattern of the first group like:
aimer.
Follow this link to see all the endings of the conjugation of the first group verbs :
conjugation rules and endings for the first group verbs.
However, although the terminations are perfectly regular, stem can be irregular and have numerous variations.
S'entre-manger is conjugated the same way that verbs that end in :
-ger.
For sound purpose, verbs ending in
-ger add the letter
« e » after the stem letter
« g » with endings in
« -a » or
« -o ». Example:
« nous mangeons »,
« il mangeait ». For sound purpose again, verbes ending in
-éger turn the
« é » in
« è » before silent endings.
The verb
s'entre-manger is a reflexive verb which is always reflexive. So it is always conjugated with a reflexive pronoun. Here is the list of the french reflexive pronouns:
« me »,
« te »,
« se »,
« nous »,
« vous »,
« se ».