further efforts further elaborate further elaborated further elaborates further elaboration further element further elements further elucidated further elucidation further embarrassment further embodiment further emphasis further emphasised further emphasized further empirical further employment further enable further enables further encourage further encouraged further encouragement further encourages further engagement further enhance further enhanced further enhancement further enhancements further enhances further enhancing further enquiries further enrich further enriched further ensure further entries further environmental further erode further escalation further established further establishes further european further evaluation further events further evidence further evolution further exacerbate further exacerbated further exacerbates further exacerbating further examination further examinations further examine further examined further example further examples further excavation further excavations further exchange further expand further expanded further expanding further expansion further expansions further experience further experiment further experimental further experimentation further experiments further explain further explained further explains further explanation further explanations further exploration further explorations further explore further explored further exposure further expressed further extend further extended further extension further facilitate further facilitated further factor further feature further features further field further financial further findings further first further focus further following further food further form further forms further forward further found further fragmentation further from the sun