Một người viết liên tiếp các chữ cái và số: Covid19Covid19....Hỏi chữ cái (hay số)thứ 2020 là chữ (hay số) nào

bài alone

[uspj]|||h|||
[tpig]|||s|||
[utof]|||ffdd
[uro]|||f h
[uspj]|||h|||
[tpig]|||s|||
[utof]|||dffdd
[yoa]|||
j| k|
[le] [utl] l [utk]k
j[ut]| [uts]
[qh] [the] h [tje]f
f[te]| [ted]
[s8] [wts] s [wtf]h|
[wt]| [wts]
[a0] [wra] a [wrf]h|
[wr]| [wr]
[le] [utl] l [utk]k
j[ut]| [uts]
[qh] [the] h [tje]f
f[te]| [ted]
[s8] [wts] s [wtf]h|
[wt]| [wth]
[wh]| [je]|
[tl]| [je] [tl]
[utje]|[utfe]|[uthe]
xz[xute]z[xute] [utle]
[tjie]|[tige]|[tihe]
cx[tiec]x[ztie] [tlie]
[wuth]|[wutf]|[wuth]
xz[xwut]z[xwut] [wutlh]
[wurh]|[wur]j [wur]
l [wur] [wurj] [wurl]
[utje]|[uthe]|[utfe]
xz[xute]z[utke] [utle]
[tiec]|[xtie]|[tlie]
cx[tiec]x[ztie] [xtie]
[wuth]|[wutl]|[wutl]
xz[xwut]z[xwut] [wutlh]
[wurh]|[wur]j [wur]
l [wur] [wurj] [wurl]
[sj]|a|u
pupua s
[uje] [te] [ue] [te]
[uhe] [te] [ue] [te]
[ige] [te] [ie] [te]
[sie] [te] [ie] [te]
[wuf] [wt] [wu] [wt]
[wu] [wt]f[wuf]d[wtd]
[wu] [wr] [wu] [wr]
[ue] [wr] [ufe] [wrh]
[uje] [te] [ue] [te]
[uhe] [te] [ue] [te]
[ige] [te] [ie] [te]
[sie] [te] [ie] [te]
[wuf] [wt] [wu] [wt]
[wu] [wtd]f[wuf]d[wtd]
[wu] [wr] [wu] [wr]
[wuh] [wrf] [wul] [wrl]
[uspj]|||hjs l z
[tpji]|||h f k k
[utol]| h|f
klfhx lzk|||
j| k|
[le] [utl] l [utk]k
j[ut]| [uts]
[qh] [the] h [tje]f
f[te]| [ted]
[s8] [wts] s [wtf]h|
[wt]| [wts]
[a0] [wra] a [wrf]h|
[wr]| [wr]
[le] [utl] l [utk]k
j[ut]| [uts]
[qh] [the] h [tje]f
f[ut]| [utd]
[s8] [wts] s [wtf]h|
[wt]| [wth]
[wh]| [je]|
[tl]| [je] [tl]
[utje]|[uthe]|[utfe]
xz[xute]z[utke] [utle]
[tjie]|[tige]|[tihe]
cx[tiec]x[ztie] [tlie]
[wuth]|[wutf]|[wuth]
xz[xwut]z[xwut] [wutlh]
[wurh]|[wur]j [wur]
l [wur] [wurj] [wurl]
[utje]|[uthe]|[utfe]
xz[xute]z[utke] [utle]
[tiec]|[xtie]|[tlie]
cx[tiec]x[ztie] [xtie]
[wuth]|[wutl]|[wutl]
xz[xwut]z[xwut] [wutlh]
[wurh]|[wur]j [wur]
l [wur] [wurj] [wurl]
s|a|u
pu[pj]u[ka] [sl]g
[tie]|[tie]|[tie]|
[tlie] [tlie] [tkie]l
[wut]|[wut]|[wut]|
[wutl] [xwut] [wuth]
[wurh]|[wur]j [wur]
l [wur] [wurj] [wurl]
[utje]|[ute]|[ute]|
[utje] [utke] [utle]g
[tie]|[tie]|[tie]|
[tlie] [tlie] [tkie]l
[wut]|[wut]|[wut]|
[wutl] [xwut] [wuth]
[wurh]|[wur]j [wur]
l [wur] [wurj] [wurl]
[utje]