[tag=NNS] [lemma=whir] [□]
[tag=NNS] [lemma=whir] [□=□]
[tag=NNS] [lemma=whir] [□ & □]
Each oxygen atom sports , on average , eight electrons whirring around eight tightly packed protons . She woke in fear as shadowy shapes lurched on her walls and sinister sounds whirred outside her window .