Actually 219, 22X was Bedok. 23X Toa Payoh. 24X Jurong Int, 25X
Jurong Ind, 26X Ang Mo Kio, 27X Bt Merah, 28X Clementi, 29X
Tampines, 30X Choa Chu Kang, 31X Serangoon (Weirdo 217), 32X
Hougang, 33X Jurong East/ West (1980s), 34X Bt Panjang, 35X Pasir
Ris, 36X Bt Batok, 37X Woodlands, 38X Eunos/ Ubi, 390 Airport, 400
Special Svs, 410 Bishan lor.
Speaking about 217 - that was when feeders fell into the 21x group,
210-218. However, for 217, it was the only living legacy of the 21x
feeders with the original number retained despite the re-routing of
the service to Serangoon Int until it was renumbered as 317.