The whole verses are based on Dm and F following the form of the first Ooo's. There is no guitar in this part, but these are the chords under it. The chords are written for standard tuning, but the Dm - F is easier to do in Drop-D has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it, ooh, Rumour has it (azchords.com)