Beta (Βήτα in Greek) used to make the /b/ sound in Greek, but nowadays it makes the /v/ sound, with the Μπ digraph making the /b/ sound instead. Delta (Δέλτα in Greek) also used to make the /d/ sound in Greek, but nowadays it makes the /ð/ sound, with the Ντ digraph making the /d/ sound instead. Gamma (Γάμμα in Greek), ALSO used to make the /g/ sound, but nowadays it makes the /ɣ/ sound, with the Γκ digraph making the /g/ sound instead. So... Β /b/ → /v/ Δ /d/ → /ð/ Γ /g/ → /ɣ/ ΜΠ /b/ ΝΤ /d/ ΓΚ /g/
c2a.
