Frequency per million of words occurring in isolation, at the edge (beginning or end), or in the middle of an utterance, split by grammatical category for infant- (IDS), child- (CDS), and adult-directed speech (ADS).

The relative proportions of words in each utterance position in each speech register are indicated as a percentage underneath the frequency per million. Grammatical categories are ordered according to overall word frequency in IDS, from highest to lowest. Frequency per million has been rounded to the nearest whole integer.