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

Quiz for Verb: 'To Head'

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

'Head off' - Stop someone or force them to change direction

'Head off' - Prevent something bad happening

'Head out' - Go out

'Head off' - Leave somewhere to go to another place

'Head up' - Be in charge

'Head for' - Move or travel towards