week-4:
facebook:
https://www.facebook.com/sujon/posts/175925872997223
https://www.facebook.com/sujon/posts/175925679663909
https://www.facebook.com/sujon/posts/176547076268436
https://www.facebook.com/sujon/posts/176547029601774
https://www.facebook.com/sujon/posts/176852806237863
https://www.facebook.com/sujon/posts/176852706237873
https://www.facebook.com/sujon/posts/177221006201043
https://www.facebook.com/sujon/posts/177219362867874
https://www.facebook.com/sujon/posts/177508096172334
https://www.facebook.com/sujon/posts/177507749505702
twitter:
https://twitter.com/sujon/status/938572335648448512
https://twitter.com/sujon/status/938571978193043456
https://twitter.com/hdactech/status/939087794840002560
https://twitter.com/hdactech/status/939099521157435392
https://twitter.com/hdactech/status/938794800366673922
https://twitter.com/hdactech/status/939099908862238721
https://twitter.com/sujon/status/940043267382452224
https://twitter.com/sujon/status/940043669721059328
https://twitter.com/hdactech/status/940129569171955713
https://twitter.com/sujon/status/940392308846895104