2H/2S opening showing 5 - 10 HCP and 5 card in the
openingsuit and a sidesuit in minor. You can decide if you use 4+ or 5 in the
minorsuit. 5-5 is more safe, but 5-4 is more frequently.
Response:
2NT : Ask for sidesuit. After 3C/3D, 3 in the opening
suit is invitational.