A disturbance can be subtle.Logical formLearned from3 sentences. A vibrato can be subtle.Logical formLearned from3 sentences. A black humor can be subtle.Logical formLearned from3 sentences. A working can be subtle.Logical formLearned from3 sentences. Cultural differences can be subtle.Logical formLearned from3 sentences. A trough can be subtle.Logical formLearned from3 sentences. Gesticulations can be subtle.Logical formLearned from3 sentences. A motive can be subtle.Logical formLearned from3 sentences. A genetic variation can be subtle.Logical formLearned from3 sentences. Utterances can be subtle.Logical formLearned from3 sentences. A rhythmic pattern can be subtle.Logical formLearned from3 sentences. A paradox can be subtle.Logical formLearned from3 sentences. A demise can be subtle.Logical formLearned from3 sentences. A risk can be subtle.Logical formLearned from3 sentences. A cause can be subtle.Logical formLearned from3 sentences.