Levelcodes:

 Level 1.2: SNKMTD
 Level 1.3: RWVJBC
 Level 2.1: TFGBMN
 Level 2.2: HJMKPL
 Level 2.3: QGTHGD
 Level 3.1: PSVZKL
 Level 3.2: SFPYSW
 Level 4.1: CGGYQM
 Level 4.2: KFGZXQ


by Kevin J.