| class | classes | classroom | classic | classmate |
| pressure | pressured | pressuring | pressurize | pressurizing |
| assess | assessed | assessing | assessment | assessments |
| rehearse | rehearses | rehearsal | rehearsed | rehearsing |
| practise | practises | practised | practising | unpractised |
| decide | decides | decided | deciding | undecided |
| pencil | pencils | penciller | pencilled | pencilmaker |
| cancel | cancels | cancelling | cancelled | cancelation |
| parcel | parcels | parcelled | parcelling | parcelling |
| scissors | scissors | scissors | scissoring | scissoring |
