Change the order of WooCommerce Checkout form fields

/*********************************************************************************************/
/** Change field order on checkout page /**
/*********************************************************************************************/
add_filter('woocommerce_checkout_fields','reorder_woo_fields');

function reorder_woo_fields($fields) {
    //move these around in the order you'd like
    // First Name //
    $fields2['billing']['billing_first_name'] = $fields['billing']['billing_first_name'];
    // Last Name
    $fields2['billing']['billing_last_name'] = $fields['billing']['billing_last_name'];
    // Person Type Select
    $fields2['billing']['billing_persontype'] = $fields['billing']['billing_persontype'];
    // Person CPF
    $fields2['billing']['billing_cpf'] = $fields['billing']['billing_cpf'];
    // Person RG
    // if activated in the plugin woocommerce-extra-checkout-fields-for-brazil // $fields2['billing']['billing_rg'] = $fields['billing']['billing_rg'];
    // Company Name
    $fields2['billing']['billing_company'] = $fields['billing']['billing_company'];
    // CNPJ
    $fields2['billing']['billing_cnpj'] = $fields['billing']['billing_cnpj'];
    // Inscricao Estadual
    // if activated in the plugin woocommerce-extra-checkout-fields-for-brazil // $fields2['billing']['billing_ie'] = $fields['billing']['billing_ie'];
    // Data Nascimento
    $fields2['billing']['billing_birthdate'] = $fields['billing']['billing_birthdate'];
    // Sexo
    $fields2['billing']['billing_sex'] = $fields['billing']['billing_sex'];
    // Endereço - CEP
    $fields2['billing']['billing_postcode'] = $fields['billing']['billing_postcode'];
    // Endereço - País
    $fields2['billing']['billing_country'] = $fields['billing']['billing_country'];
    // Endereço
    $fields2['billing']['billing_address_1'] = $fields['billing']['billing_address_1'];
    // Endereço - número
    $fields2['billing']['billing_number'] = $fields['billing']['billing_number'];
    // Endereço - complemento
    $fields2['billing']['billing_address_2'] = $fields['billing']['billing_address_2'];
    // Endereço - bairro
    $fields2['billing']['billing_neighborhood'] = $fields['billing']['billing_neighborhood'];
    // Endereço - estado
    $fields2['billing']['billing_state'] = $fields['billing']['billing_state'];
    // Endereço - cidade
    $fields2['billing']['billing_city'] = $fields['billing']['billing_city'];
    // Telefone
    $fields2['billing']['billing_phone'] = $fields['billing']['billing_phone'];
    // Celular
    $fields2['billing']['billing_cellphone'] = $fields['billing']['billing_cellphone'];
    // Email
    $fields2['billing']['billing_email'] = $fields['billing']['billing_email'];

    //just copying these (keeps the standard order)
    $fields2['shipping'] = $fields['shipping'];
    $fields2['account'] = $fields['account'];
    $fields2['order'] = $fields['order'];

    return $fields2;
}