41. The past tense endings were always identical, and resembled those of strong verbs , but prefixed with a dental infix. 42. In Old English, there were seven major classes of strong verb ; each class has its own pattern of stem changes. 43. The Germanic strong verb , occurring in Germanic languages including German and English, is characterised by a vowel shift called ablaut. 44. The situation is similar with the strong verbs in suppletive forms and thus follow an exceptionally unpredictable pattern of conjugation. 45. Strong verbs , unlike weak verbs, are conjugated by umlaut, but they rely on them much less to distinguish forms and conjugations.46. An example verb " * neman " " to take " is shown here to illustrate the inflection of strong verbs . 47. There are more than 200 strong and irregular verbs, and there is a gradual tendency for strong verbs to become weak. 48. This is the primary mode of distinction of tenses, in contrast with the radical vowel changes characteristic of the strong verbs . 49. There are more than 200 strong and irregular verbs, but there is a gradual tendency for strong verbs to become weak. 50. A variety of umlaut occurs in the second and third person singular forms of the present tense of some Germanic strong verbs .