Levelcodes:

 Level 02: VQVQFDE
 Level 03: ICIGCAA
 Level 04: ECPQPCC
 Level 05: FTWKFEN
 Level 06: HQWFTFW
 Level 07: DWNDGBW
 Level 08: JCJCJHM
 Level 09: ICVGCGT
 Level 10: LQPCUJV
 Level 11: HNWVGKB
 Level 12: FTQKVLE
 Level 13: DCPLQMH
 Level 14: EWDGPNL
 Level 15: TONGTOV
 Level 16: IQDNKQO
 Level 17: IQDNKQO
 Level 18: KKKPURE
 Level 19: NGOGKSP
 Level 20: NNGWTTO
 Level 21: TQNGFVC