let lp_denoms = get_unique_lp_asset_denoms_from_positions(open_positions);

for lp_denom in &lp_denoms {
    // calculate the rewards for the lp denom
    let rewards_response = calculate_rewards(
        deps.as_ref(),
        &env,
        lp_denom,
        &info.sender,
        current_epoch.id,
        true,
    )?;
    //...
}
let farms = get_farms_by_lp_denom(
    deps.storage,
    lp_denom,
    None,
    Some(config.max_concurrent_farms),
)?;
//...
for farm in farms {
    // skip farms that have not started
    if farm.start_epoch > current_epoch_id {
        continue;
    }

    // compute where the user can start claiming rewards for the farm
    let start_from_epoch = compute_start_from_epoch_for_address(
        deps.storage,
        &farm.lp_denom,
        last_claimed_epoch_for_user,
        receiver,
    )?;
    //...
}
for epoch_id in start_from_epoch..=until_epoch {
    if farm.start_epoch > epoch_id {
        continue;
    }
    //...
}
