\( [ \mathfrak{C}^a_{b c} + \mathfrak{C}^{a'}_{b' c'} ](n) = [ \mathfrak{C}^{a+a'}_{b+b' \, c+c'} ] (n) \)
\( [ \mathfrak{C}^a_{b c} + \mathfrak{C}^{a'}_{b' c'} ](n) = [ \mathfrak{C}^{a'+a}_{b'+b \, c'+c} ] (n) \)
\( [ \mathfrak{C}^a_{b c} + \mathfrak{C}^{a'}_{b' c'} ](n) = [ \mathfrak{C}^{a'}_{b' c'} + \mathfrak{C}^a_{b c} ](n) \)
\( [ ( \mathfrak{C}^a_{b c} + \mathfrak{C}^{a'}_{b' c'} ) + \mathfrak{C}^{a''}_{b'' c''} ](n) = [ \mathfrak{C}^{a+a'}_{b+b' \, c+c'} + \mathfrak{C}^{a' '}_{b'' c''}] (n) \)
\( [ ( \mathfrak{C}^a_{b c} + \mathfrak{C}^{a'}_{b' c'} ) + \mathfrak{C}^{a''}_{b'' c''} ](n) = [ \mathfrak{C}^{(a+a')+a''}_{(b+b')+b'' \,\,(c+c')+c''} ] (n) \)
\( [ ( \mathfrak{C}^a_{b c} + \mathfrak{C}^{a'}_{b' c'} ) + \mathfrak{C}^{a''}_{b'' c''} ](n) = [ \mathfrak{C}^{a+(a'+a'')}_{b+(b'+b'') \,\, c+(c'+c'')} ] (n) \)
\( [ ( \mathfrak{C}^a_{b c} + \mathfrak{C}^{a'}_{b' c'} ) + \mathfrak{C}^{a''}_{b'' c''} ](n) = [ \mathfrak{C}^a_{b \, c} + \mathfrak{C}^{a'+a''}_{b'+b'' c'+c''}] n) \)
\( [ ( \mathfrak{C}^a_{b c} + \mathfrak{C}^{a'}_{b' c'} ) + \mathfrak{C}^{a''}_{b'' c''} ](n) = [ \mathfrak{C}^a_{b c} + (\mathfrak{C}^{a'}_{b' c'} + \mathfrak{C}^{a''}_{b'' c''}) ](n) \)
Puzzels