trouble free+◼◼◼adjective[UK: ˈtrʌb.l̩ friː] [US: ˈtrʌb.l̩ ˈfriː]
unproblematic+◼◼◻adjective[UK: ˌʌn.ˌprɒ.blə.ˈmæ.tɪk] [US: ˌʌn.ˌprɒ.blə.ˈmæ.tɪk]
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