The increasing order of basicity for the following intermediates is (from weak to strong)

(v) $<$ (i) $<$ (iv) $<$ (ii) $<$ (iii)

(iii) $<$ (i) $<$ (ii) $<$ (iv) $<$ (v)

$(\mathrm{v})<($ iii $)<$ (ii) $<$ (iv) $<$ (i)

(iii) $<$ (iv) $<$ (ii) $<$ (i) $<$ (v)