Swans fell to Cardiff City in yesterdayâ€™s derby.
Trundle told talkSPORT: â€śWeâ€™ve shown flashes of what we can do but then there is another side where we havenâ€™t looked ourselves.
"We do switch the squad around for the Europa League games and then the Premier League match after but it can affect you. Itâ€™s shown in our form a little bit.â€ť
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