! Type in unicode polytonic Greek using beta code as indicated below:
Combine punctuation marks when necessary e.g. )/a => ἄ
| /a => ά | \a => ὰ | =a => ᾶ | )a => ἀ |
| (a => ἁ | !a => ᾳ | +i => ϊ | h => η |
| q => θ | x => χ | c => ξ | z = ζ |
| j => ψ | w => ω | s => σ, ς |
στροφάλιγξ, ιγγος (ἡ)
1 turbilhão; redemoinho 2 volta; giro; circuito 3 Astron. órbita 4 queijo redondo. 〈στρέφω〉