) In some countries, puzzles of this type are called  cryptograms,  a name we shall use from here on.
( ( -RRB- ( In ( some countries ) ) ) ( , ( ( puzzles ( of ( this type ) ) ) ( ( are ( called ( ( cryptograms , ) ( ( a name ) ( we ( shall ( ( use ( from here ) ) on ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (ADVP (RB -RRB-)) (IN In) (NP (DT some) (NNS countries))) (, ,) (NP (NP (NNS puzzles)) (PP (IN of) (NP (DT this) (NN type)))) (VP (VBP are) (VP (VBN called) (NP (NP (NNS cryptograms)) (, ,) (NP (NP (DT a) (NN name)) (SBAR (S (NP (PRP we)) (VP (MD shall) (VP (VB use) (PP (IN from) (NP (RB here))) (PP (IN on)))))))))) (. .)))
Cryptograms are really complex and fun to figure out. 
( Cryptograms ( ( ( are really ) ( ( ( complex and ) fun ) ( to ( figure out ) ) ) ) . ) )
(ROOT (S (NP (NNS Cryptograms)) (VP (VBP are) (ADVP (RB really)) (ADJP (JJ complex) (CC and) (JJ fun) (S (VP (TO to) (VP (VB figure) (PRT (RP out))))))) (. .)))