http://www.w3.org/TR/css3-fonts/.font-variant-ligatures-prop

Row ID.on.off
[.t01] if fi ff tf ft jf fj if fi ff tf ft jf fj
[.t02] most Jesuit effects most Jesuit effects
[.t03] most Jesuit effects most Jesuit effects
[.t04] this & that this & that
Row ID.on.off
[.t01] ao bx ao bx
[.t02] av av
[.t03] bj bj
[.t04] al al
aa ab ac ad ae af ag ah ai aj ak al am 
an ao ap aq ar as at au av aw ax ay az
ba bb bc bd be bf bg bh bi bj bk bl bm 
bn bo bp bq br bs bt bu bv bw bx by bz
ca cb cc cd ce cf cg ch ci cj ck cl cm 
cn co cp cq cr cs ct cu cv cw cx cy cz
da db dc dd de df dg dh di dj dk dl dm 
dn do dp dq dr ds dt du dv dw dx dy dz
ea eb ec ed ee ef eg eh ei ej ek el em 
en eo ep eq er es et eu ev ew ex ey ez