It was introduced and used primarily during the PERSON@1 -LRB- NUMBER@1 -- NUMBER@2 -RRB- , PERSON@2 -LRB- NUMBER@3 -- NUMBER@4 -RRB- and early Muromachi -LRB- NUMBER@4 -- NUMBER@5 -RRB- periods .

It was introduced and used primarily during the PERSON@1 -LRB- NUMBER@1 - NUMBER@2 -RRB- , PERSON@2 -LRB- NUMBER@3 - NUMBER@4 -RRB- and early Muromachi -LRB- NUMBER@4 -- NUMBER@5 -RRB- periods .
