"stair3020"? BABA BA? BABABA?BABABA?BABABA?ABAABAABA?ABAABAABA?BABA BA? BABAABA? BAABAA BA?A BAABAABA? BAA BABA?BAA BAABA?ABAA BAABA?ABAA BAA BA?ApApApAApA?ApApApApApA@U?pApA?@pApA@U?pApA?@?@@U? BAApA BA@U? BAApAApA@U?AApAA BAAApA@U?AApAA BAA BA?AApAApApAAApA?AApAApApAApApA@U?A?@ApApAA?@@U?A?@ApApAApApA???A??@@??@@?A??A@@?UU%$?@???;&???A?;&??A?A??UUХ$A??A?A?@A??A?@A?@???@?@UU@@?A@@?@@@UU@@@A@@?A@@@?@@@A@@@@@?@@A@@@A@@@@A@@@@@@@@A@@A@@@?@@@A@@@@@@?@@@A@@@A@@@?@@A@?@??@A@(A@??@(A@pApA?pApA(A@@AA?pApA@AAXAA?XAA@AAXAA???@@@?@??@@@@@@@??@@@@@@?@@@@@@@@???@@?@@@?@@@@@@@@?@@@@@@?@@@@?@?@@A@A@?A@(A@(A@?(A@@A@@AA?pAApA AXAA?XAApA ApApA?A AA0ApA A?pA AA0AApA?pA AApApApA?A0AA@AA0A?A0AA@AApA?A@AAPAA@A?A@AAPAApA?APAA`AAPA?APAA`AApA?A`AApAA`A?A`AApAApA?ApAAAApA?ApAAAApA?AAAAAA?AAAAApA?BABAAA?AABA BA?AA BAApA?BABABA?BABA BA? BA BABA?BA BA BA? BABA BA? BABABAUU$@@@A@@@@@UU$@@A@@@A@@?@@A@@@@?@@A@@A@@AXAAA@AAApApAApApAA@AAA(A@ApApAA(A@A?@A?@A(A@AA@A?@AA@A@@A@@AA@AA@AXAAApApAApA AApA AApApAAApAApA AAApAAA0AAA0AAApAAA@AAA0AAA@AAA0AABAABAA BAA BAABAAAAA BAAAAAApAAApAAAAAAAAApAAAAAApAAApAAAAAApAABAA BAA BAA BAA BAABAA BAABAABAA BAA BAABAABAABAABAABAABAAAAAAAAAAAAAAA`AAA`AAApAAApAAA`AAApAAAPAAAPAAA`AAA`AAAPAAApAAA@AAA@AAAPAAAPAAA@AAApAAA0AAA AApA AApA AApAAAXAAAXAAAXAAA@AAA@AAA@A@A(A@A(A@A(A@AA@A@@A@@A@@A@@A@@A?@A@@@A@@@A@@A@@A@@@A?@A@@A@@@A@@@A@@@A@@@A?@A@@?A??A@@@A@@@A??A?@@@A@@@@@@A@@A@@?@@A@@A@?A@A@@AA@A@AA@A@A@AA@AA@?A@AA@(A@?(A@AA@A(A@UU(A@A(A@(A@UU(A@A(A@A(A@?(A@A(A@@A@?@A@A(A@A@A@@A@A@A@@AA@AAA@A@A@AA?@AAA@AAXAA?XAAA@AAAXAAUU$XAAAXAAXAAUU$XAAAXAAAXAA?XAAAXAApAA?pAAAXAAApAApAAApAApA ApA AApAAApA A?pA AApA AA A?A AApA AAA AA AAA AA0AA0AAA AAA0A?A0AAA0AA0A?A0AAA0AAA0AA0AAA0AA@AA@AAA0AAA@A?A@AAA@AA@A?A@AAA@AAA@AA@AAA@AAPAAPAAA@AAAPA?APAAAPAAPA?APAAAPAAAPAAPAAAPAA`AA`AAAPAAA`A?A`AAA`AA`A?A`AAA`AAA`AA`AAA`AApAApAAA`AAApA?ApAAApAApA?ApAAApAAApAApAAApAAAAAAApAAAA?AAAAAAA?AAAAAAAAAAAAAAAAAAAAAAA?AAAAABA?BAAAAABABAABABABAABAABA?BAABABA?BAABAABABAABABABAABAABA?BAABA BA? BAABAA BA BAA BA BA BAA BAA BA?A B BA BA?A BA B BAA??A BA B? B?A BAABAA B?A BABAAApA?A BAApAA??A?AApAApApA?A?ApApAA?@?ABAA BAABA?ABAA BAAApABABA BA BABAApA%IV BA BBAp,0r$BA BApA؛25# B?ApAApA?pApA??@pApA