$$\text{紧急求救信号gydF4y2Ba}＝gydF4y2Ba［gydF4y2Ba\begin{array}{cccccc}{\mathrm{bgydF4y2Ba}}_{\mathrm{01gydF4y2Ba}}& {\mathrm{bgydF4y2Ba}}_{\mathrm{11gydF4y2Ba}}& {\mathrm{bgydF4y2Ba}}_{\mathrm{21gydF4y2Ba}}& \mathrm{1gydF4y2Ba}& {\mathrm{一个gydF4y2Ba}}_{\mathrm{11gydF4y2Ba}}& {\mathrm{一个gydF4y2Ba}}_{\mathrm{21gydF4y2Ba}}\\ {\mathrm{bgydF4y2Ba}}_{\mathrm{02gydF4y2Ba}}& {\mathrm{bgydF4y2Ba}}_{\mathrm{12gydF4y2Ba}}& {\mathrm{bgydF4y2Ba}}_{\mathrm{22gydF4y2Ba}}& \mathrm{1gydF4y2Ba}& {\mathrm{一个gydF4y2Ba}}_{\mathrm{12gydF4y2Ba}}& {\mathrm{一个gydF4y2Ba}}_{\mathrm{22gydF4y2Ba}}\\ ⋮gydF4y2Ba& ⋮gydF4y2Ba& ⋮gydF4y2Ba& ⋮gydF4y2Ba& ⋮gydF4y2Ba& ⋮gydF4y2Ba\\ {\mathrm{bgydF4y2Ba}}_{\mathrm{0gydF4y2Ba}\mathrm{lgydF4y2Ba}}& {\mathrm{bgydF4y2Ba}}_{\mathrm{1gydF4y2Ba}\mathrm{lgydF4y2Ba}}& {\mathrm{bgydF4y2Ba}}_{\mathrm{2gydF4y2Ba}\mathrm{lgydF4y2Ba}}& \mathrm{1gydF4y2Ba}& {\mathrm{一个gydF4y2Ba}}_{\mathrm{1gydF4y2Ba}\mathrm{lgydF4y2Ba}}& {\mathrm{一个gydF4y2Ba}}_{\mathrm{2gydF4y2Ba}\mathrm{lgydF4y2Ba}}\end{array}］gydF4y2Ba．gydF4y2Ba$$

$$\mathrm{HgydF4y2Ba}（gydF4y2Ba\mathrm{zgydF4y2Ba}）gydF4y2Ba＝gydF4y2Ba\mathrm{ggydF4y2Ba}{\displaystyle \underset{\mathrm{kgydF4y2Ba}＝gydF4y2Ba\mathrm{1gydF4y2Ba}}{\overset{\mathrm{lgydF4y2Ba}}{\prod gydF4y2Ba}}{\mathrm{HgydF4y2Ba}}_{\mathrm{kgydF4y2Ba}}}（gydF4y2Ba\mathrm{zgydF4y2Ba}）gydF4y2Ba．gydF4y2Ba$$