Regular Verbs in the Preterite 

Preterite of the verb "machen" (= normal case)
Person Personal pronoun Root Ending
1st person singular ich mach te
2nd person singular du mach test
3rd person singular er, sie, es, man mach te
1st person plural wir mach ten
2nd person plural ihr mach tet
3rd person plural sie, Sie mach ten


Other regular verbs with small changes: 

Preterite of the verbs with -d, -t at the end of the root or consonant at the end of the root + -n, -m
Person Personal pronoun Root Ending
1st person singular ich wart ete
2nd person singular du wart etest
3rd person singular er, sie, es, man wart ete
1st person plural wir wart eten
2nd person plural ihr wart etet
3rd person plural sie, Sie wart eten