appappplus0yyappappplusappsxyappsappappplusxyappappsumwithfnilnilappappsumwithfappappconsxxsappappplusappfxappappsumwithfxs2.0appappplusappsxyappplusxappappplusappsxyappappplusxyappappplusappsxyappsappappplusxyappappsumwithfappappconsxxsappappsumwithfxsappappsumwithfappappconsxxsappfxappappsumwithfappappconsxxsappplusappfxappappsumwithfappappconsxxsappappplusappfxappappsumwithfxstrueappappsumwithfappappconsxxsappappsumwithfxsappappsumwithfappappconsxxsappfxtrueapp22appappsumwithfappappconsxxsappplusappfxfalseappappsumwithfappappconsxxsappappplusappfxappappsumwithfxsfalseappappplusappsxyappappplusxytrueappappplusappsxyappplusxfalseappappplusappsxyappsappappplusxyfalse