Quiz: So do I & Neither do I

'So do I.'
'So am I.'
'Neither am I.'
'Neither do I.'

'So did I.'
'So was I.'
'Neither was I.'
'Neither did I.'

'So was I.'
'So did I.'
'Neither was I.'
'Neither did I.'

'I did.'
'So did I.'

'So do I.'
'So had I.'
'So would I.'

'I don't.'
'Neither do I.'

'So will I.'
'So am I.'

'So was I.'
'Neither was I.'
'I was.'

'So do I.'
'So did I.'
'So would I.'

'So do I.'
'I do.'