Is 'To Strike' Separable or Inseparable? - Phrasal Verb Quiz

Quiz for Verb: 'To strike'

Is the phrasal verb 'strike' separable or inseparable in the following examples?

'Strike on' - Have a good idea

'Strike down' - Kill

'Strike out' - Start going towards a place

'Strike down' - Disallow a law, decision, etc

'Strike out' - Start doing something new and different

'Strike out' - Cross writing out

'Strike off' - Remove someone's professional licence to practise

'Strike out' - Fail

'Strike up' - Start (conversation, relationship)

'Strike upon' - Have a good idea