Create 10 new levels for a remake of a classic arcade game - 2nd iteration

For a remake of a classic arcade game for the Android mobile platform I need 10 new levels. Each level is defined by a 20 lines and 240 columns text file, where each character denotes a tile in the game. E.g. the following snippet is already part of a level in the existing game: BF oo AD o o AD oo AD AD KKKK AD AD AD AD + II AD IIII 3 AHBBBBBBBBBBBBBBBBBBBBBBBB AAAAAAAAAAAAAAAAAAAAAAAAAA 10 times a full 20 x 240 characters snippet is needed. I will offer a Java project that can be used with the Netbeans IDE (Eclipse would also work, but users of that IDE would need to setup the project themselves) for testing the designed levels. I can give some instructions on where to place the newly designed level files in the project structure, but bidders should be able to compile and run a project in the IDE. Each level needs to be tested and solved this way, since there is no point in designing levels that the users of the game cannot finish successfully. Levels should ideally have a bit varying difficulty and they should in any case look different from each other and the existing levels. I must be able to retain all rights to the levels.