O: drop

Ϊk: drop [ƦWɦW]

:

    oӫOAiH}YӫwƦW, pG[Ѽ, K|ܩҦAw[
JƦWɡC

td:
  drop ladder9      }EƦWɡC
  drop              ܧA[JƦWɥHΦۤvƦWC

O:  join match ladder9 ladder19
