Opening Weak Twos, generally 6-10 points and a six card suit, relies on changing your system from Basic Acol to what is known as Benjamised Acol.
Some play 2♥ and 2 ♠ whilst others include 2 ♦ as well
It would be too confusing to include here but if you are interested I would direct you to a splendid article by Bernard Magee reproduced from Bridge magazine at Weak Twos
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