2344. The place of a reciprocal pronoun, _each other_, is supplied by
#inter nōs#, #inter vōs#, #inter sē#, or by #alter# or #alius# followed
by another case of the same word: as,
#inter nōs nātūrā cōniūnctī sumus#, _Fin._ 3, 66, _we are united with
each other by nature_. #Cicerōnēs puerī amant inter sē#, _Att._ 6, 1,
12, _the Cicero boys are fond of each other_. #cum alius aliī subsidium
ferret#, 2, 26, 2, _when they were helping each other_. For #uterque#,
see 2400. The reciprocal idea is sometimes expressed by the form of the
verb: as, #fulvā lūctantur harēnā#, V. 6, 643, _they wrestle with each
other on the yellow sand_ (1487).
2345. From Livy on, #invicem inter sē#, #invicem sē#, or #invicem#
alone, is often used in the expression of reciprocal relations: as,
#invicem inter sē grātantēs#, L. 9, 43, 17, _mutually congratulating
each other_. #invicem sē antepōnendō#, Ta. _Agr._ 6, _mutually
preferring one another_. #ut invicem ardentius dīligāmus#, Plin. _Ep._
7, 20, 7, _that we may love each other more ardently_.