if (punctType === 'COND_COMMA') {
            if (!/[-,]$/.test(preceedingSubfield.value)) {
                const nextValue = preceedingSubfield.value + ',';
                debug(`Updated subfield ${preceedingSubfield.code} from '${preceedingSubfield.value}' to '${nextValue}'`);
                preceedingSubfield.value = nextValue;