Chain of 2-word (open) compounds: Sun light → Light house → House cat → Cat fish → Fish tank

re:  2-letter Abbr. of 50 states, DC, (5 terr., 3 possessions)

great... Are these the Longest chains?

             >>>  They should be - found by computer --- Thank you.



_______________________Chain of  2-word (open) compounds

Example:
          Sun light → Light house → House cat → Cat fish → Fish tank

Prob 1:
           Parchment,  (Light, Stop, Ice, Blue, Money, Paper, Pit),  Sheet

                        (Reorder  the  words inside Parentheses)


For Prob2, Prob3,  the BEGIN, END  words  are not given.

             As usual, pls don't post an Answer,  but
                         rather  post more Problems.


Prob2:  (Bell, Block, Car, Chain, Door, Hat, Key, Party, Rack, Room, Tower)



Prob3:  (Arts, Bridge, Cat, Center, Chair, Club, Dog, Field, Food, Food, Goal, House, House, Language, Lift, Office, Plant, Post, Sign, Stop, Truck)

              note:  Food,Food,    and     House,House

                     i suppose the Ans is not going to be unique.