Concussions can be subtle.Logical formLearned from2 sentences. A result may pertain-to concussions.Logical formLearned from2 sentences. A male may suffer a concussion on a month.Logical formLearned from2 sentences. A concussion may damage engines.Logical formLearned from2 sentences. A male may suffer a concussion a week.Logical formLearned from2 sentences. A male may receive concussion.Logical formLearned from2 sentences. Concussions can be to a head.Logical formLearned from2 sentences. A (head concussion) can be mild.Logical formLearned from2 sentences. Signs can be constituted-of-or-filled-with concussions.Logical formLearned from2 sentences. Concussions may result from impacts.Logical formLearned from2 sentences. A hallmark can be constituted-of-or-filled-with concussion.Logical formLearned from2 sentences. An undertaker may suffer a concussion.Logical formLearned from2 sentences. A concussion may be disabled.Logical formLearned from2 sentences. Some houses may collapse from a concussion.Logical formLearned from2 sentences. A (shock wave) can be from a concussion of an (imploding tube).Logical formLearned from2 sentences.