The result of his investigations was to show that the language was partly alphabetical and partly syllabic. Down to 1837, Grotefend had recognised about sixty different signs.[622] Westergaard rightly calculated, from the relation of the vowels to the consonants, that they must exceed a hundred, but his actual identification only reached eighty-two. He noticed two other probable groups, but he was unable to decide whether they formed one sign or two. One of them has now gained admission.[623] In consequence of the great care he exercised in the collation of his copies only four defective signs found their way into his list.[624] He noticed the recurrence of twelve other signs, which he ascribed to the error of the copyist, though he thought three of them might be genuine. It turned out that three were genuine, but only one of those that seemed to him likely to be so.[625] In addition to the determinative sign before proper names, which Grotefend had pointed out, he recognised another, the horizontal wedge, which is sometimes interchangeable with it. It will remain a curiosity in the history of decipherment that Westergaard should have gone out of his way to declare that the words for God, Ormuzd and Heaven were not preceded by a determinative—‘their importance being, no doubt, thought too great to need any such distinction.’[626] He, in fact, mistook the determinative sign itself for the vowel which happens to precede his rendering of these three names. He thought he had discovered signs for six vowels (_a_, _â_, _i_, _e_, _u_ and _o_), and eighteen consonants.[627] Of the former only one (_u_) turned out to be correct. His _a_ and _i_ have both syllabic values (_an_ and _in_). His long _â_ is a defective sign (No. 10). His _e_ should be _i_ and his _o_ an _a_. Only four of his consonants were ultimately found to be used as alphabetical signs, and for these his values are correct (_t_, _kh_, _s_ and _m_). A few of the others represented correct consonantal values, though used syllabically. For example, his _p_ is _ap_, his _r_ is _ra_, his _s_ is _as_, his _n_ is _na_. He was more fortunate in his syllabic values, sixteen of which have been accepted as strictly correct, if we include two where _w_ is substituted for the more usual _m_; and eight others may be passed as approximately correct (Nos. 5, 11, 12, 22, 23, 60, 69, 81). The values he attached to about fifteen other signs were, however, highly inaccurate and misleading; and he was unable to assign any value whatever to twenty-two out of his eighty-two signs.[628]