Here are the combinations you can use for Greek transliteration:
β______b, v
η______h
θ______q, 8
ξ______c, 3, ks
σ, ς___s, j
υ______u
χ______x
ψ______y, ps
ω______w
Modern Greek diacritics:
τόνος (tonos)_____' (before the vowel)
διαλυτικά (diaeresis)_____" (before the vowel, before or after the tonos)
Ancient Greek diacritics:
ψιλή (smooth breathing)______)
δασεῖα (rough breathing)______(
ὀξεῖα (acute)______/
βαρεῖα (grave)______\
περισπωμένη (circumflex)______=
διαίρεσις/διαλυτικά (diaeresis)______+
ὑπογεγραμμένη (iota subscript)______|
* is used to indicate a capital.
For lowercase, the order of diacritics is: LETTER, breathing, diaeresis, accent, iota subscript.
For uppercase, the order of diacritics is: asterisk, breathing, diaeresis, accent, LETTER, iota subscript.