from www.brainfuck.org

+>>>>>>>++>+>+>+>++<[
    +[
        --[++>>--]->--[
            +[
                +<+[-<<+]++<<[-[->-[>>-]++<[<<]++<<-]+<<]>>>>-<<<<
                <++<-<<++++++[<++++++++>-]<.---<[->.[-]+++++>]>[[-]>>]
            ]+>>--
        ]+<+[-<+<+]++>>
    ]<<<<[[<<]>>[-[+++<<-]+>>-]++[<<]<<<<<+>]
    >[->>[[>>>[>>]+[-[->>+>>>>-[-[+++<<[-]]+>>-]++[<<]]+<<]<-]<]]>>>>>>>
]