Findings:
- affix hopping
- against the humming of diesel engines
- The Humming Top
- Still and humming and glaringly dull
- in the dark humming hours of the night
- Humming
- distro hopping
- hopping (user)
- train hopping
- Frequency hopping
- bus hopping
- Summit Hopping
- The Hopping Whirling Ball of Death
- Rimrod's Fencing Autobiography : Thirteen
- Chinese Hopping Vampire
- channel hopping
- Hopping
- bar hopping
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