P3mutada = 
011011101110110010101111111010111111111111011011101110110010101110100010001000001011111000100101110110011100001010010001111010100100101110011010110001111010101101111110101000100010001000100100110010110101010101101000100010011000100111010001101110111011001011011101100101010000110010110101011100110001011000111100100010100010111101110010111111111101111100100010100010111001110011111110101101111101000111111010111110101110
a=P3mutada(1:42) 
b=P3mutada(43:84) 
c=P3mutada(85:126) 
d=P3mutada(127:168) 
e=P3mutada(169:210) 
f=P3mutada(211:252) 
g=P3mutada(253:294) 
h=P3mutada(295:336) 
i=P3mutada(337:378) 
j=P3mutada(379:420) 
A1=[a;b;c;d;e;f;g;h;i;j] 
ai alguna forma de hacer esto en un lazo en matlab? 
gracias de antemano