{4}cat{0} {12}<<A\"{13}
$(echo 00)
{12}A"{0}

{4}cat{0} {12}<<A\\\"{13}
$(echo 01)
{12}A\"{0}

{4}cat{0} {12}<<A\B{13}
$(echo 1)
{12}AB{0}

{4}cat{0} {12}<<A\\B{13}
$(echo 2)
{12}A\B{0}

{4}cat{0} {12}<<A\\\B{13}
$(echo 3)
{12}A\B{0}

{4}cat{0} {12}<<A\\\\B{13}
$(echo 4)
{12}A\\B{0}

{4}cat{0} {12}<<A\\\\\B{13}
$(echo 5)
{12}A\\B{0}

{4}cat{0} {12}<<'A\'{13}
$(echo 10)
{12}A\{0}

{4}cat{0} {12}<<'A\B'{13}
$(echo 11)
{12}A\B{0}

{4}cat{0} {12}<<'A\\B'{13}
$(echo 12)
{12}A\\B{0}

{4}cat{0} {12}<<'A\\\B'{13}
$(echo 13)
{12}A\\\B{0}

{4}cat{0} {12}<<'A\\\\B'{13}
$(echo 14)
{12}A\\\\B{0}

{4}cat{0} {12}<<"A\""{13}
$(echo 20)
{12}A"{0}

{4}cat{0} {12}<<"A\B"{13}
$(echo 21)
{12}A\B{0}

{4}cat{0} {12}<<"A\\B"{13}
$(echo 22)
{12}A\B{0}

{4}cat{0} {12}<<"A\\\B"{13}
$(echo 23)
{12}A\\B{0}

{4}cat{0} {12}<<"A\\\\B"{13}
$(echo 24)
{12}A\\B{0}

{4}cat{0} {12}<<"A\\\\\B"{13}
$(echo 25)
{12}A\\\B{0}

{4}echo{0} {8}x{0}