Although the Standard Englishes of the various Anglophone countries are very similar, nonetheless, often minor grammatical differences occur between them. In American and Australian English, for example, "sunk" and "shrunk" as past tense forms of "sink" and "shrink" are beginning to become acceptable as standard forms, whereas standard British English still insists on "sank" and "shrank".[6] In South African English, the deletion of verbal complements is becoming common.