The imperative mood undergoes no mutation either in the present or future tense. Thus, hasten thou; _Grahálgalí_, which is also the second person of the indicative, thou hastenest. _Eichi_, do thou: _Grkapichi_, love thou: or _Grkapichiam_, which likewise signifies thou wilt love. They sometimes prefix the particle _Tach_ to the second person of the imperative, and _Ták_ to the third: thus _Tach grahápichì_ obey thou. _Tach grakatřani_, say thou. _Ták hanek_, let him come: which also denotes the present of the potential; thus: _Ták hanek Kaámelk_, the Spaniard may come for me. Prohibition is expressed by the future with the addition of the particle _tchik_ or _chigè_, according to the following letter. Thus, thou mayst not kill, _Chit kahamatrañiam_. Thou mayst not lie, _Chit Noaharegraniam_. The optative, or subjunctive, is formed of various particles, placed before or after the present of the indicative: as I shall show by examples. _Chigriek_, would that. _Chigriek grkapichi g'Dios eknam caogarik_: Would that thou wouldst love God the Creator. _Kët_, if. _Kët greenřani, G'Dios grkapichi kët_: If thou wert good thou wouldst love God. _Kët_, if, is repeated both in the condition and the conditionated. _Amla_, after that. _Amla grkapichi g`Dios, Dios `lo nkapíchieřoám_: After thou hast loved God, God will love thee. _Postquam amaveris Deum, Thus amabit te._ _Ehenhà_, until. _Ehenhà na chigrkápichi_ _g'Dios, chitl gihè groamketápekàm_: Until, or as long as thou dost not love God, thou wilt never be quiet. _Donec vel quamdiu non amaveris Deum, non eris unquam quietus._ _Amamach_, when. _Amamach rikápichieřoa, lo grkápichioam_: When thou lovest me, I will love thee. _Quando amaveris me, amabo te._ _Kët mat_, if. _Kët mat nkápichirioà, là rikapitla kët_: If they had loved me, I would have loved them. _Si amassent me, amassem illos._ _Tach_, that. _Tach grkápichioa, rikapichieřoàm_: Love me, that I may love thee. _Ama me, ut amem te._ The Abipones seem to want the infinitive, the place of which they supply in other ways, as I shall more plainly show by examples, thus: now I wish to eat: _Là rihete m'hakéñe_. _Rihe_, or _rihete_, I wish, and _hakéñe_, I eat, are both put in the same mood, tense, and person; the letter M placed between them makes, or supplies the place of our infinitive. I cannot go, _Haoahen m'ahik_. _Haoahen_ and _ahik_, are both in the first person of the present of the indicative, M only being placed between. Thou knowest not how to teach me: _Chig graařaige m'riapa grañi_. Wilt thou be baptized, or, as the Abipones say, wilt thou have thy head washed? _Mik mich grehech m'nakarigi gremarachi?_