The rules that use the vocabulary item "2s3" are:
2s3 152mm howitzer
2s3 howitzer
swa 2s3 152mm howitzer
swa 2s3 howitzer
2s3 152mm howitzers
2s3 howitzers
swa 2s3 152mm howitzers
swa 2s3 howitzers
2s3 152mm howitzer
2s3 152mm howitzers
2s3 howitzer
2s3 howitzers
swa 2s3 152mm howitzer
swa 2s3 152mm howitzers
swa 2s3 howitzer
swa 2s3 howitzers