22:duplication&14:duplication&12:duplication&10:duplication&6:duplication&4:duplication&2:duplication&0:leaf&1:leaf&3:leaf&5:leaf&9:duplication&7:leaf&8:leaf&11:leaf&13:leaf&21:duplication&19:duplication&17:duplication&15:leaf&16:leaf&18:leaf&20:leaf