create alias beach_background (7) -> beach (75299)
create alias cave_background (92) -> cave (14580)
create alias jungle_background (104) -> jungle (4859)
create alias sky_background (8) -> sky (149759)
create alias desert_background (72) -> desert (7526)
create alias field_background (82) -> field (3822)
remove implication forest_background (11861) -> forest (69251)
remove implication forest_background (11861) -> nature_background (16083)
remove implication nature_background (16083) -> nature (31300)
remove alias forest_bg (0) -> forest_background (11861)
remove alias nature_bg (0) -> nature_background (16083)
remove alias natural_bg (0) -> nature_background (16083)
remove alias natural_background (0) -> nature_background (16083)