What is it?

 

My first in fat but never in far.

My second's in rat and also in car.

My third's in open and also in close.

My fourth is in house but never in hose.

 

My fifth is in blow and also in bone.

Six and seven are in whole and also alone.

The word means big problems for you and for me.

And if you're in it you won't be happy.

 

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