| act for(expression, exchange, switch, swap) |
| alter(trade, substitute, swap) |
| alternate(exchange, switch, swap) |
| answer for(expression, exchange, switch, swap) |
| back up(expression, trade, exchange, substitute, switch) |
| be in place of(exchange, switch, swap) |
| change(trade, exchange, substitute, switch, swap) |
| commute(exchange, switch, swap) |
| compensate(trade, substitute, swap) |
| cover for(expression, exchange, switch, swap) |
| deputize(exchange, switch, swap) |
| displace(trade, exchange, substitute, switch, swap) |
| do the work of(expression, idiom, exchange, switch, swap) |
| double for(expression, exchange, switch, swap) |
| exchange(trade, substitute, switch, swap) |
| fill in(expression, trade, substitute, swap) |
| fill in for(expression, idiom, exchange, switch, swap) |
| follow(trade, substitute, swap) |
| front for(expression, trade, substitute, swap) |
| give back(expression, trade, substitute, swap) |