last_month is now prev_month.
last_month is now prev_month.

nanaya/moebooru,euank/moebooru-thin,nanaya/moebooru,moebooru/moebooru,nanaya/moebooru,moebooru/moebooru,moebooru/moebooru,moebooru/moebooru,nanaya/moebooru,euank/moebooru-thin,euank/moebooru-thin,euank/moebooru-thin,nanaya/moebooru,moebooru/moebooru,euank/moebooru-thin