A nail may fall_off.Logical formLearned from15 sentences. Some scabs may fall_off.Logical formLearned from15 sentences. A person may fall_off some times.Logical formLearned from15 sentences. A scab may fall_off in a week.Logical formLearned from15 sentences. A male may fall_off a motorcycle.Logical formLearned from15 sentences. Implants may prevent a head from fall_offing shoulders.Logical formLearned from15 sentences. Interest may fall_off.Logical formLearned from14 sentences. A person may fall_off a face of the earth.Logical formLearned from14 sentences. Leaves may fall_off in a summer.Logical formLearned from14 sentences. A person may fall_off a roof.Logical formLearned from14 sentences. A top may fall_off.Logical formLearned from14 sentences. An one may fall_off.Logical formLearned from14 sentences. Doors may fall_off.Logical formLearned from14 sentences. Some persons may fall_off.Logical formLearned from14 sentences. A wing may fall_off.Logical formLearned from14 sentences.