Front

to board a plane, train, bus, etc.

Back

get on

Front

get around

Back

to move from place to place

Front

set off

Back

to start a journey

Front

to talk to someone you haven't seen for a while and tell them your news

Back

catch up

Front

to wait or be patient

Back

hang on

Front

to research or search for information

Back

look up

Front

back up

Back

to make a copy of your work

Front

to activate a machine or light

Back

switch on

Front

to enter a website or app using a username and password

Back

log in

Front

set up

Back

to configure something