Analyze does have the -ize/-ise suffix, just a different spelling. From the OED: "On Greek analogies the vb. would have been analysize, Fr. analysiser, of which analyser was practically a shortened form, since, though following the analogy of pairs like annexe, annexe-r, it rested chiefly on the fact that by form-assoc. it appeared already to belong to the series of factitive vbs. in -iser ... More @Wikipedia
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