A (left flank) can be weakened.Logical formLearned from3 sentences. A flank may pertain-to a leader.Logical formLearned from3 sentences. The left may pertain-to a flank.Logical formLearned from3 sentences. A flank may weaken.Logical formLearned from3 sentences. A flank may pertain-to (invasion beaches).Logical formLearned from3 sentences. A flank may pertain-to a complex.Logical formLearned from3 sentences. Flanks can be rugged.Logical formLearned from3 sentences. Cross-sections may exhibit flanks.Logical formLearned from3 sentences. Flanks can be protected.Logical formLearned from3 sentences. A gap can be on a flank.Logical formLearned from3 sentences. A place can be on a flank of a battalion.Logical formLearned from3 sentences. Positions can be on a (southern flank).Logical formLearned from3 sentences. A force can be on a flank.Logical formLearned from3 sentences. A hill can be on a flank.Logical formLearned from3 sentences. A flank can be hilly.Logical formLearned from3 sentences.