"BISLERI" is written as "IREBISL" The word is divitded into two parts of 4 and 3 letters respectively = (BISL) (ERI), now both the parts are swapped and the second part is also reversed. Code = (IRE) (BISL) Similarly, for PANTHER = (PANT) (HER), second part is reversed and swapped. Thus, PANTHER : REHPANT