Let us take ourselves to Milton Keynes. We are at Central Station, and we should like to go to The Point about one mile away.
Almost every service in MK covers that mile, and we could take a 1, 2, 3, 4, 5, 6, 7, or 8, quite apart from a C1, MK1, X1, 2A, 3A, X4, X5, and two different X6's.