_cbbbcccacabcbabcbcbcbabcaaaaabcbaaaacbbabcaabbabcbaabbcbbabcaaccabcbaacccbbabcbbaaabcbbbaacbbabcbbbbabcbbbbbcbbabcbbccabcbbbcccbbabcccaaabcbccaacbbabcccbbabcbccbbcbbabcccccabcbcccccbbabccbabcbbacbaaaacbbacaabaaaaaaaacabaaaaaaaaacabacabcabaaaacabcbaaaaacabcbacbaaaacbabbcbcbcbacbaabbcbbacaabaaaabbbbcabaaaaabbbbcabacabcabaabbcabcbaaabbcabcbacbaabbcbabbcbcbcbacbaacccbbacaabaaaacccccabaaaaacccccabacabcabaacccabcbaaacccabcbacbaacccbabbcbcbcbacbbbaacbbacaabbbbbaaaacababbbbaaaacabacabcabbbaacabcbabbaacabcbacbbbaacbabbcbcbcbacbbbbbcbbacaabbbbbbbbbcababbbbbbbbcabacabcabbbbbcabcbabbbbcabcbacbbbbbcbabbcbcbcbacbbbcccbbacaabbbbbcccccababbbbcccccabacabcabbbcccabcbabbcccabcbacbbbcccbabbcbcbcbacbccaacbbacaabccccaaaacabaccccaaaacabacabcabccaacabcbaccaacabcbacbccaacbabbcbcbcbacbccbbcbbacaabccccbbbbcabaccccbbbbcabacabcabccbbcabcbaccbbcabcbacbccbbcbabbcbcbcbacbcccccbbacaabcccccccccabacccccccccabacabcabcccccabcbacccccabcbacbcccccbabbcbcbcbaaabaaacbabcbbabcaababcaacbabcbbabcbbbabcbbcbabcbbabccababccacbabcbbabbbabbcbabcbbabcbcbabcbccbabcbbacabacacbabcbbacbbaccbacccbabcbbacbcaabcbbacbaaaaabbcaaaabccbbabcaaaabccbbabcaaaabcacaabacbaabbabbcaabbbccbbabcaabbbccbbabcaabbbcacbcaabacbaaccabbcaaccbccbbabcaaccbccbbabcaaccbcacbcbbbacbbbaaabbcbbaabccbbabcbbaabccbbabcbbaabcacbccabacbbbbbabbcbbbbbccbbabcbbbbbccbbabcbbbbbcacbbbacbbbccabbcbbccbccbbabcbbccbccbbabcbbccbcacbcbcbacbccaaabbcccaabccbbabcccaabccbbabcccaabcaccabacbccbbabbcccbbbccbbabcccbbbccbbabcccbbbcaccbbacbccccabbcccccbccbbabcccccbccbbabcccccbcacccxbc**_ ___ _aa=xaax _ab=xabx _ac=xacx _ba=xbax _bb=xbbx _bc=xbcx _ca=xcax _cb=xcbx _cc=xccx _x=x xaax *=aaaa* aaaa* *_=aa*_ aa*_ xaax=___ xabx *=aabb* aabb* *_=ab*_ ab*_ xabx=___ xacx *=aacc* aacc* *_=ac*_ ac*_ xacx=___ xbax *=bbaa* bbaa* *_=ba*_ ba*_ xbax=___ xbbx *=bbbb* bbbb* *_=bb*_ bb*_ xbbx=___ xbcx *=bbcc* bbcc* *_=bc*_ bc*_ xbcx=___ xcax *=ccaa* ccaa* *_=ca*_ ca*_ xcax=___ xcbx *=ccbb* ccbb* *_=cb*_ cb*_ xcbx=___ xccx *=cccc* cccc* *_=cc*_ cc*_ xccx=___ a ax=x _a _ax=x _b _bx=x _* _*x=x b bx=x __ __x=x * *x=x x c cx=x x*=x xaa=_aa_x _aa_x _aa_-a xab=_ab_x _ab_x _ab_-_a xac=_ac_x _ac_x _ac_-_b xba=_ba_x _ba_x _ba_-_* xbb=_bb_x _bb_x _bb_-b xbc=_bc_x _bc_x _bc_-__ xca=_ca_x _ca_x _ca_-* xcb=_cb_x _cb_x _cb_-x xcc=_cc_x _cc_x _cc_-c