text: It was introduced and used primarily during the Kamakura ( 1192 â `` 1333 ) , Nanbokucho ( 1334 â `` 1392 ) and early Muromachi ( 1392 â `` 1573 ) periods .
simplified: It was introduced and used primarily during the Kamakura ( 1192 - 1333 ) , Nanbokucho ( 1334 - 1392 ) and early Muromachi ( 1392 â `` 1573 ) periods .