In phonetic use, there is no concern to reproduce Greek orthography, and the Greeklish is a phonetic transcription (usually with English phonetic norms, sometimes with other languages' like German) of Greek words — although often there is a mixture of the two. In particular, iotacism is preserved: the various letters and digraphs now pronounced as /i/ are transcribed as i, and not differentiated as they are in an orthographic scheme (e.g. h, i, u, ei, oi for η ι υ ει οι). In a phonetic scheme, xi is usually x or ks or 3; ks or 3 is used if x has been chosen, following orthographic norms, for chi (χ). Psi and theta will usually be the digraphs ps and th. 3 is often used to represent xi (ξ) because of the similar shape of the number 3 to the original letter albeit mirrored.