Ignoring alphabets from the home number "21B-Mercury-Drive-Londonderry-NH-03053"

I tried to parse `21B-Mercury-Drive-Londonderry-NH-03053`

result:
```{
  number: '21',
  street: 'B-Mercury',
  type: 'Dr',
  city: 'Londonderry',
  state: 'NH',
  zip: '03053'
}
```

21B is the number of the property. Since the "B" is attached to the street, am not able to solve my problem.

Any suggestions?